Search Results - "Chisum, Jonathan D."

Gate reflectometry of single-electron box arrays using calibrated low temperature matching networks by Filmer, Matthew J., Huebner, Matthew, Zirkle, Thomas A., Jehl, Xavier, Sanquer, Marc, Chisum, Jonathan D., Orlov, Alexei O., Snider, Gregory L.

“…Sensitive dispersive readouts of single-electron devices (“gate reflectometry”) rely on one-port radio-frequency (RF) reflectometry to read out the state of…”
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Performance Limitations and Measurement Analysis of a Near-Field Microwave Microscope for Nondestructive and Subsurface Detection by Chisum, J. D., Popovic, Z.

“…Near-field microwave microscopy provides a means for nondestructive localized characterization of both surface and subsurface materials and devices. This paper…”
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High-Efficiency, Wideband GRIN Lenses With Intrinsically Matched Unit Cells by Garcia, Nicolas C., Chisum, Jonathan D.

“…We present an automated design procedure for the rapid realization of wideband millimeter-wave lens antennas. The design method is based upon the creation of a…”
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A Novel Collapsible Flat-Layered Metamaterial Gradient-Refractive-Index Lens Antenna by Papathanasopoulos, Anastasios, Rahmat-Samii, Yahya, Garcia, Nicolas C., Chisum, Jonathan D.

“…With the advent of small-scale satellite technologies, there has been significant interest in developing low-profile antennas. This article presents a novel…”
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Compound GRIN Fanbeam Lens Antenna With Wideband Wide-Angle Beam-Scanning by Garcia, Nicolas C., Chisum, Jonathan D.

“…This work presents a parallel-plate waveguide (PPWG) fanbeam antenna achieving a <inline-formula> <tex-math notation="LaTeX">\pm 48^\circ…”
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The Systematic Design of Noncommensurate Impedance Matching Tapers for Ultrawideband Gradient-Index Lens Antennas by Wang, Wei, Garcia, Nicolas C., Chisum, Jonathan D.

“…We propose a general method for designing wideband matching tapers in inhomogeneous media where phase velocity is coupled to the taper impedance profile. Such…”
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Dynamically Reconfigurable Microwave Circuits Leveraging Abrupt Phase-Change Material by Connelly, David A., Chisum, Jonathan D.

“…This article proposes a concept for dynamically reconfigurable distributed microwave circuits by leveraging the abrupt conductivity transition in phase-change…”
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Beamforming Phased-Array-Fed Lenses With0.5λ-Spaced Elements by Wang, Wei, Estes, Nicholas, Garcia, Nicolas C, Roddy, Matthew, Bolstad, Andrew K, Chisum, Jonathan D

“…We propose a phased-array-fed lens (PAFL) antenna that is capable of beamforming like a phased array but with array elements spaced beyond [Formula Omitted]…”
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A Training-Based Mutual Information Lower Bound for Large-Scale Systems by Gao, Kang, Meng, Xiangbo, Laneman, J. Nicholas, Chisum, Jonathan D., Bendlin, Ralf, Chopra, Aditya, Hochwald, Bertrand M.

“…We provide a mutual information lower bound that can be used to analyze the effect of training in models with unknown parameters. For large-scale systems, we…”
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Cooperative Cross-Correlation Algorithm to Optimize Linearity of Fused RF Sensors by Kleber, Nikolaus, Dietlein, Charles R., Chisum, Jonathan D.

“…Fusing data from multiple sensors can improve performance beyond that of any individual sensor and at worst is limited to the best individual performance among…”
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A 0.71-mW Antenna-Coupled On-Off-Key Receiver for Gbps Millimeter-Wave Wireless Communications by Estes, Nicholas J., Kang, Xiwen, Meng, Xiangbo, Bendlin, Ralf, Chopra, Aditya, Laneman, J. Nicholas, Hochwald, Bertrand M., Chisum, Jonathan D.

“…This article presents a 39-GHz 800-Mb/s antenna-coupled ON-OFF-key (OOK) receiver with a baseband output capable of driving a 50-<inline-formula> <tex-math…”
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Three-Dimensional RF Sensor Networks for Widespread Spectrum Monitoring by Kleber, Nikolaus, Chisum, Jonathan D., Hochwald, Bertrand, Laneman, J. Nicholas

“…Spectrum monitoring could improve spectral management and efficiency by enabling spectrum sharing, strengthening policy enforcement, and facilitating…”
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Directivity in RF Sensor Networks for Widespread Spectrum Monitoring by Kleber, Nikolaus, Haenggi, Martin, Chisum, Jonathan D., Hochwald, Bertrand, Laneman, J. Nicholas

“…Widespread RF spectrum monitoring could enable data-driven modeling of spectrum usage, enhance spectral utilization, and help automate policy enforcement…”
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Discrete-Time Synchronization for Narrow-Band Signals by Baram, Michael, Chisum, Jonathan D.

“…Many emerging applications including PNT, DAs, and channel characterization require precise timing synchronization. Two-way time transfer (TWTT) is a common…”
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High-Speed Cross-Correlation for Spectrum Sensing and Direction Finding of Time-Varying Signals by Merritt, John C., Chisum, Jonathan D.

“…Cross-correlation is a promising method for highly sensitive spectrum sensing. By computing the cross-power spectrum from a pair of sensors and performing time…”
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Beamforming Phased-Array-Fed Lenses With >0.5λ-Spaced Elements by Wang, Wei, Estes, Nicholas, Garcia, Nicolas C., Roddy, Matthew, Bolstad, Andrew K., Chisum, Jonathan D.

“…We propose a phased-array-fed lens (PAFL) antenna that is capable of beamforming like a phased array but with array elements spaced beyond <inline-formula>…”
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RF Reflectometry of NEMS Motional Capacitance with Micromanipulator Probe by Celis-Cordova, Rene, Williams, Ethan M., Cayaspo, Gabriel J. Quintero, Gose, Jacob J., Brown, Abigail F., Chisum, Jonathan D., Orlov, Alexei O., Snider, Gregory L.

“…Adiabatic reversible computing can dramatically reduce heat generation by switching circuits slowly, relative to their RC time constants, and using reversible…”
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Increased Power Handling of Vanadium Dioxide T/R Switches Using a Resonant Topology by Estes, N. J., Chisum, Jonathan D.

“…The temperature- and power-dependent intermodulation distortion of a vanadium dioxide switch is investigated via a highly linear two-tone testbed at 3.5 GHz…”
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Practical sub-Nyquist sampling via array-based compressed sensing receiver architecture by Bolstad, Andrew K., Vian, James E., Chisum, Jonathan D., Youngho Suh

“…This paper introduces the Array-based Compressed sensing Receiver Architecture (ACRA). ACRA allows digital receiver arrays to operate at dramatically larger…”
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An array-based compressed sensing receiver architecture by Bolstad, Andrew K., Vian, James E., Chisum, Jonathan D., Youngho Suh

“…This paper describes an Array-based Compressed sensing Receiver Architecutre (ACRA) which allows a digital receiver array to drastically increase its…”
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